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Share-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jan. 31, 2025
Jan. 31, 2024
Jan. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Tax benefit associated with share-based compensation expense $ 7,204 $ 3,086 $ 6,379
Tax benefit realized from share-based compensation $ 7,846 $ 1,763 $ 3,467
Weighted average grant date fair value $ 41.92 $ 26.96 $ 25.38
2017 Stock Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common shares authorized 10,000,000    
Common shares available to grant 4,114,227    
2008 Stock Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common shares authorized 10,000,000    
Common shares available to grant 5,594,830    
2017 and 2008 Stock Incentive Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years)   7 years  
2017 and 2008 Stock Incentive Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years) 10 years    
Employee Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years) 1 year    
Compensation cost of stock options granted but not yet vested $ 0    
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation cost of stock options granted but not yet vested $ 29,687    
Weighted average grant date fair value $ 41.9 $ 27.42 25.01
Weighted average period of recognition (in years) 1 year 10 months 24 days    
Vested, Shares 852,263    
Aggregate grant date fair value, vested $ 29.72 $ 31.11 $ 30.48
Restricted Stock Units (RSUs) | Non-employee Directors      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options granted 0 0 0
Restricted Stock Units (RSUs) | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years)   2 years  
Restricted Stock Units (RSUs) | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years)   4 years  
Performance Stock Units (PSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation cost of stock options granted but not yet vested $ 4,973    
Weighted average grant date fair value $ 41.92    
Weighted average period of recognition (in years) 1 year 10 months 24 days    
Vested, Shares 157,082    
Aggregate grant date fair value, vested $ 31.26 $ 33.01 $ 27.79
Performance Stock Units (PSUs) | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years)   2 years  
Performance Stock Units (PSUs) | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years)   4 years